A kind of automobile brake disc brake surface grinding device

Abstract

The present invention discloses a device for grinding the brake surface of an automobile brake disc, which relates to the technical field of automobile brake disc processing, and comprises: a support shaft, a workpiece being engaged and connected to the top of the support shaft, a slider being slidably connected to one side of the support shaft, a support column being fixedly connected to the top of the slider, and two end plates being symmetrically fixedly connected to the two ends of the support column; a lifting sleeve being sleeved on the outside of the support column, and mounting plates being symmetrically fixedly connected to the two ends of the lifting sleeve; a support disc being rotatably connected to one side of the mounting plate, the support discs being arranged opposite to each other, a base being fixedly connected inside the support disc, and a lifting plate being rotatably connected between the bases; a mounting disc being placed inside the support disc, a grinding wheel being fixedly connected to one side of the mounting disc, and lifting teeth being fixedly connected to the corresponding lifting plates on the other side of the mounting disc, and the lifting teeth being in contact with the corresponding lifting plates. The present application has the advantages of being able to adjust the height of the grinding wheel in real time according to the wear of the grinding wheel, giving the automobile brake disc sufficient contact pressure, and ensuring grinding efficiency and quality.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile brake disc processing, and more particularly to a device for grinding the brake surface of an automobile brake disc. Background Art

[0002] The car brake disc is one of the most common parts on a car. It is part of the disc brake system. Its main function is to generate friction with the brake pads when the driver steps on the brake pedal, thereby slowing down or stopping the rotation of the wheel.

[0003] After turning, automotive brake discs often require a grinding process. Grinding achieves higher precision than turning, eliminates tool marks left behind by turning, smoothes out microscopic irregularities, and significantly reduces the roughness of the brake disc surface. Grinding also makes the brake surface more uniform, eliminates residual stress, reduces braking noise, and extends the disc's service life.

[0004] The equipment used in the automobile brake disc grinding process generally adopts a brake disc turning and grinding machine. The grinding execution end of the brake disc turning and grinding machine is two grinding wheels that are spaced and set opposite each other. The distance between the two grinding wheels is usually greater than the thickness of the automobile brake disc. By raising and lowering the grinding wheels, the two sides of the brake disc can be alternately ground. Usually, in the grinding process of the same batch of automobile brake discs, the lifting distance of the same set of grinding wheels before replacement is preset and fixed. After repeated use, the grinding wheels are severely worn and the thickness gradually decreases. Under the premise of a certain lifting distance, the pressure of the grinding wheel on the brake surface of the automobile brake disc will gradually decrease during this process, and the grinding efficiency and quality will decrease simultaneously. In severe cases, the thickness of the automobile brake disc may not meet the technical requirements. Therefore, it is necessary to propose an automobile brake disc brake surface grinding processing device to solve the above problems. Summary of the Invention

[0005] To address the challenges of the prior art, the present invention aims to provide a brake disc surface grinding device for automobiles. This device addresses the issue of conventional brake disc turning and grinding machines, where the grinding actuator lifts and lowers the same distance each time. This makes it difficult to apply sufficient pressure to the brake disc as the grinding wheel gradually wears, leading to reduced grinding efficiency and quality. This device has the advantage of being able to adjust the grinding wheel height in real time based on wheel wear, ensuring sufficient contact pressure on the brake disc and ensuring grinding efficiency and quality.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] A device for grinding the brake surface of an automobile brake disc comprises a support shaft, a workpiece is engaged and connected to the top of the support shaft, a slider is slidably connected to one side of the support shaft, a support column is fixedly connected to the top of the slider, and two end plates are symmetrically fixedly connected to the two ends of the support column;

[0008] The support column is externally sleeved with a lifting sleeve, and two ends of the lifting sleeve are symmetrically fixedly connected to two mounting plates;

[0009] One side of each mounting plate is rotatably connected to a support plate, the two support plates are arranged facing each other, the inner surface of the support plate is fixedly connected to a plurality of pairs of bases in a circumferential array, and a lifting plate is rotatably connected between each pair of bases;

[0010] A mounting plate is placed inside the support plate. A grinding wheel is fixedly connected to one side of the mounting plate. A plurality of lifting teeth are fixedly connected to the other side of the mounting plate in a circular array. Each lifting tooth abuts against the corresponding lifting plate.

[0011] As a preferred solution of the present invention, the bottom of the support shaft is fixed on the base.

[0012] As a preferred solution of the present invention, a propulsion frame is fixed on the top surface of the base on one side of the support shaft, and a No. 1 motor is fixedly installed on the top surface of the base at one end of the propulsion frame. A screw is fixedly connected to the output end of the No. 1 motor, and the screw is rotatably connected to the propulsion frame. The screw is threadedly connected to the slider, and a lifting groove is opened inside the support column.

[0013] As a preferred solution of the present invention, an electric push rod is fixedly installed inside the support column, and two inner support arms are symmetrically fixed on the inner wall of the lifting sleeve. The inner support arms are fixed to the output ends of the electric push rod, and the inner support arms are slidably connected to the lifting slots. A No. 2 motor is fixedly installed on one side of each mounting plate away from the support plate, and the output end of the No. 2 motor is fixedly connected to an output gear.

[0014] As a preferred solution of the present invention, each of the end plates is fixedly connected to a side close to the corresponding mounting plate with a cylinder seat, a first spring is installed inside the cylinder seat, a central axis column is provided through the mounting plate and the support plate, one end of the central axis column is slidably connected to the corresponding cylinder seat, a plurality of convex columns are fixedly connected to the middle part of the central axis column in a circular array, a plurality of high-pressure nozzles are fixedly connected to the cylindrical surface of the other end of the central axis column in a circular array, and a pressure plate is fixed to the other end of the central axis column.

[0015] As a preferred solution of the present invention, a cylindrical gear is provided through each of the mounting plates, the cylindrical gear is fixedly connected to the surface of the support plate, a number of inner convex strips are fixedly connected in a circular array on the inner wall of the support plate, a torsion spring is installed inside the base, and the lifting plate is elastically connected to the base through the torsion spring.

[0016] As a preferred solution of the present invention, the cylindrical gear is sleeved on the surface of the central axis column, and the cylindrical gear and the central axis column are rotationally connected.

[0017] As a preferred solution of the present invention, the cylindrical gear is meshedly connected with the corresponding output gear.

[0018] As a preferred solution of the present invention, the other side of the mounting plate is also slidably connected to a chassis, and the chassis is rotatably connected to the inner surface of the support plate. The central axis column passes through the mounting plate, the grinding wheel and the chassis. The outer edge of the mounting plate is provided with a plurality of grooves in a circumferential array, and the grooves are engaged with the corresponding inner convex strips. A plurality of second springs are installed in a circumferential array in the support plate, and the mounting plate is elastically connected to the inside of the support plate through the second spring. A plurality of pads are fixedly connected to the outer surface of the chassis in a circumferential array, and each pad abuts against the corresponding lifting plate. A plurality of inclined blocks are fixedly connected to the inner side of the chassis in a circumferential array.

[0019] As a preferred solution of the present invention, the mounting plate, the grinding wheel and the interior of the chassis are all slidably connected with a number of long rods in a circular array, a third spring is installed inside the chassis, the long rod is elastically connected to the mounting plate, the grinding wheel and the interior of the chassis through the third spring, the other end of the long rod is fixedly connected to the outer shell, a lifting head and a fourth spring are installed inside the outer shell, the lifting head is elastically connected to the interior of the outer shell through the fourth spring, a fifth spring and a closing head are installed inside the lifting head, the closing head is elastically connected to the interior of the lifting head through the fifth spring, and the closing head passes through the side of the outer shell.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. A lifting plate, lifting teeth, and pads are set between the support plate and the mounting plate. When the grinding wheel becomes thinner and the pressure is insufficient, the rotational friction between the workpiece and the grinding wheel is used to drive the grinding wheel to deflect, thereby driving the lifting teeth to drive the lifting plate to lift, thereby pushing the grinding wheel closer to the workpiece. The pad is then locked in position to continuously maintain the optimal grinding pressure, solving the problem of efficiency loss caused by wear in traditional devices. The real-time automatic compensation design realizes stable and efficient double-sided grinding operations. An innovative central axis column is set through the support plate, mounting plate, grinding wheel, and grinding wheel. High-pressure nozzles for spraying coolant are distributed on the central axis column. When grinding is in progress, the central axis column is automatically retracted into the grinding wheel to avoid interference with the grinding process. During the waste grinding stage, the central axis column automatically protrudes from the surface of the grinding wheel and sprays cooling water to reduce the temperature of the grinding wheel while washing away metal debris and impurities, effectively improving the reliability of the grinding wheel.

[0022] 2. When the center column is retracted, the pressure plate pushes the lifting head to slide, aligning the closing head with the side opening of the shell, allowing the closing head to be accurately inserted into the high-pressure nozzle, effectively preventing grinding debris from clogging the nozzle and improving system reliability. When adjusting the pressure of the grinding wheel on the workpiece, the mounting plate drives the chassis to rotate, and can also squeeze the protruding column through the inclined block, driving the center column further into the grinding wheel, ensuring that the center column is always lower than the grinding surface during the continuous wear and thinning of the grinding wheel, avoiding collision and damage with the workpiece; and the center column and the protruding column sink together, which also drives the long rod to move, thereby driving the opening on the side of the shell to sink together, ensuring that the closing head is always aligned with the nozzle, maintaining the effectiveness of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the cross-section structure of some mechanisms of the present invention;

[0025] Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0026] Figure 4 It is a schematic cross-sectional view of the support plate, mounting plate, grinding wheel and chassis of the present invention;

[0027] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0028] Figure 6 It is a schematic diagram of the partial cross-section structure of the mounting plate, grinding wheel and chassis of the present invention;

[0029] Figure 7 This is a schematic diagram of the cooperation structure of the lifting plate, lifting teeth and pad of the present invention;

[0030] Figure 8 This is a schematic diagram of the internal structure of the chassis of the present invention;

[0031] Figure 9 This is a schematic structural diagram of another state of the central axis column of the present invention;

[0032] Figure 10 For the present invention Figure 9 The enlarged structural diagram at C in the middle;

[0033] Figure 11 Schematic diagram of the changing structure of the sealing head when grinding and when not grinding according to the present invention;

[0034] Figure 12 This is a schematic diagram of the bottom structure of the mounting plate of the present invention;

[0035] Figure 13 It is a schematic diagram of the structure of the inner convex strip and the notch of the present invention.

[0036] Description of the numbers in the figure:

[0037] 11. Base; 12. Support shaft; 13. Workpiece; 21. Push frame; 22. No. 1 motor; 23. Screw; 24. Slider; 25. Support column; 26. End plate; 27. Lifting slot; 31. Lifting sleeve; 32. Electric push rod; 33. Inner support arm; 34. Mounting plate; 35. No. 2 motor; 36. Output gear; 41. Cylinder seat; 42. First spring; 43. Center column; 44. Boss; 45. High-pressure nozzle; 4 6. Pressure plate; 51. Support plate; 52. Cylindrical gear; 53. Inner convex strip; 54. Base; 55. Torsion spring; 56. Lifting plate; 61. Mounting plate; 62. Grinding wheel; 63. Chassis; 64. Slot; 65. Second spring; 66. Lifting tooth; 67. Pad; 68. Inclined block; 71. Long rod; 72. Third spring; 73. Casing; 74. Lifting head; 75. Fourth spring; 76. Fifth spring; 77. Closing head. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0039] Example 1: Please refer to Figures 1-13 As shown, the present invention discloses a brake disc brake surface grinding device for automobiles, comprising a support shaft 12, a workpiece 13 being engaged and connected to the top of the support shaft 12, a slider 24 being slidably connected to one side of the support shaft 12, a support column 25 being fixedly connected to the top of the slider 24, and two end plates 26 being symmetrically fixedly connected to both ends of the support column 25;

[0040] The support column 25 is externally sleeved with a lifting sleeve 31, and two ends of the lifting sleeve 31 are symmetrically fixedly connected to two mounting plates 34;

[0041] A support plate 51 is rotatably connected to one side of each mounting plate 34. The two support plates 51 are disposed facing each other. A plurality of pairs of bases 54 are fixedly connected to the inner surface of the support plates 51 in a circular array. A lifting plate 56 is rotatably connected between each pair of bases 54.

[0042] A mounting plate 61 is placed inside the support plate 51 . A grinding wheel 62 is fixedly connected to one side of the mounting plate 61 . A plurality of lifting teeth 66 are fixedly connected to the other side of the mounting plate 61 in a circular array. Each lifting tooth 66 abuts against a corresponding lifting plate 56 .

[0043] The bottom of the support shaft 12 is fixed on the base 11 .

[0044] A propulsion frame 21 is fixed to the top surface of the base 11 on one side of the support shaft 12, and a No. 1 motor 22 is fixedly installed on the top surface of the base 11 at one end of the propulsion frame 21. The output end of the No. 1 motor 22 is fixedly connected to a screw 23, which is rotatably connected to the propulsion frame 21, and the screw 23 is threadedly connected to the slider 24. A lifting slot 27 is opened inside the support column 25.

[0045] An electric push rod 32 is fixedly installed inside the support column 25, and two inner support arms 33 are symmetrically fixed on the inner wall of the lifting sleeve 31. The inner support arms 33 are fixed to the output end of the electric push rod 32, and the inner support arms 33 are slidably connected to the lifting slot 27. A No. 2 motor 35 is fixedly installed on the side of each mounting plate 34 away from the support plate 51, and the output end of the No. 2 motor 35 is fixedly connected to the output gear 36.

[0046] A cylindrical gear 52 is provided through each mounting plate 34, and the cylindrical gear 52 is fixedly connected to the surface of the support plate 51. A plurality of inner convex strips 53 are fixedly connected to the inner wall of the support plate 51 in a circular array. A torsion spring 55 is installed inside the base 54, and the lifting plate 56 is elastically connected to the base 54 through the torsion spring 55.

[0047] The cylindrical gear 52 is sleeved on the surface of the central shaft column 43 , and the cylindrical gear 52 and the central shaft column 43 are rotationally connected.

[0048] The cylindrical gear 52 is meshedly connected to the corresponding output gear 36 .

[0049] The other side of the mounting plate 61 is also slidably connected to the chassis 63, and the chassis 63 is rotatably connected to the inner surface of the support plate 51. The central axis column 43 passes through the mounting plate 61, the grinding wheel 62 and the chassis 63. The outer edge of the mounting plate 61 is provided with a plurality of notches 64 in a circumferential array, and the notches 64 are engaged with the corresponding inner convex strips 53. A plurality of second springs 65 are installed in a circumferential array inside the support plate 51. The mounting plate 61 is elastically connected to the inside of the support plate 51 through the second springs 65. A plurality of pads 67 are fixedly connected to the outer surface of the chassis 63 in a circumferential array. Each pad 67 abuts against the corresponding lifting plate 56. A plurality of inclined blocks 68 are fixedly connected to the inner side of the chassis 63 in a circumferential array.

[0050] Attached with instruction manual Figure 1 Take the grinding wheel 62 at the bottom of the middle lifting sleeve 31 as an example.

[0051] A mounting plate 61 is provided at the bottom of the grinding wheel 62. First, the mounting plate 61 at the bottom of the grinding wheel 62 is installed in the support plate 51, so that not only the notch 64 at the outer edge of the mounting plate 61 engages with the corresponding inner ridge 53 on the inner wall of the support plate 51 (the width of the notch 64 is greater than the width of the inner ridge 53, so that the mounting plate 61 can rotate a certain angle inside the support plate 51), but also the bottom plate 63 contacts the inner surface of the support plate 51.

[0052] Two mounting plates 34 are respectively provided at the upper and lower ends of the lifting sleeve 31, and a set of support plates 51 and grinding wheels 62 are installed on opposite sides of the two mounting plates 34. The distance between the two oppositely arranged grinding wheels 62 is greater than the thickness of the workpiece 13.

[0053] For the convenience of description, please refer to the attached manual. Figure 2 The entire component at the upper end of the support column 25 and the lifting sleeve 31 is called the upper grinding member; the entire component at the lower end of the support column 25 and the lifting sleeve 31 is called the lower grinding member. The grinding process of the workpiece 13 is as follows: First, start the No. 1 motor 22. The No. 1 motor 22 pushes the slider 24 to slide inside the push frame 21 through the threaded connection between the screw 23 and the slider 24, thereby driving the support column 25, the lifting sleeve 31 and other components above it to approach the workpiece 13, so that the two grinding wheels 62 are located on the upper and lower surfaces of the workpiece 13. After they are in place, start the electric push rod 32. The electric push rod 32 retracts, driving the inner support arm 33 to slide in the lifting slot 27. The inner support arm 33 then drives the lifting sleeve 31 to descend along the support column 25. The mounting plate 34 at the upper end of the lifting sleeve 31 drives the upper grinding member to approach the top surface of the workpiece 13. At the same time, the mounting plate 34 at the lower end of the lifting sleeve 31 drives the lower grinding member away from the bottom surface of the workpiece 13.

[0054] When the grinding wheel 62 in the upper grinding piece contacts the top surface of the workpiece 13, the mounting plate 34 on the top of the lifting sleeve 31 drives the support plate 51 to descend, and the support plate 51 drives the chassis 63, the mounting plate 61 and the grinding wheel 62 inside it to descend synchronously, but the central axis column 43 remains stationary. In the process of the support plate 51, the mounting plate 61, the grinding wheel 62 and the chassis 63 descending, the central axis column 43 originally protruding from the surface of the grinding wheel 62 is gradually retracted into the grinding wheel 62, thereby avoiding affecting the upper grinding wheel 62 from performing the grinding operation on the upper surface of the workpiece 13.

[0055] Similarly, as the lower grinding element descends, its internal center column 43 protrudes from the grinding wheel 62, and coolant is immediately sprayed from the high-pressure nozzle 45. The coolant rinses the grinding wheel 62, washing away metal debris remaining on the surface of the grinding wheel 62 after grinding. The coolant also reduces the temperature of the grinding wheel 62. Because the grinding wheel 62 on each side of the workpiece 13 only grinds a single side of the workpiece 13 for a short period of time, both the workpiece 13 and the corresponding grinding wheel 62 will heat up rapidly in a short period of time. If they are not cooled and cleaned for a long time, it is not only easy to cause cracks in the workpiece 13, but also shorten the service life of the grinding wheel 62. When grinding one side of the workpiece 13, the high-pressure nozzle 45 on the other side sprays coolant to flush and cool the grinding wheel 62 on the other side, which can not only avoid continuous heat accumulation of the grinding wheel 62, but also prevent metal debris from melting due to high temperature and adhering to the surface of the grinding wheel 62, thereby scratching the surface of the workpiece 13; at the same time, the surface of the grinding wheel 62 after cleaning and cooling is adhered to the coolant, and the workpiece 13 can be cooled the next time it contacts the workpiece 13, effectively alleviating the phenomenon of cracks in the workpiece 13 due to excessive surface temperature, achieving three goals at one stroke.

[0056] The No. 2 motor 35 on the other side of the mounting plate 34 in the upper grinding part drives the cylindrical gear 52 to rotate through the output gear 36, and the cylindrical gear 52 drives the support plate 51 to rotate. The support plate 51 and the mounting plate 61 cooperate with each other through the inner convex strip 53 and the notch 64, which can drive the mounting plate 61, the grinding wheel 62 and the chassis 63 to rotate synchronously. At the same time, the motor inside the base 11 will also drive the support shaft 12 to rotate, thereby driving the workpiece 13 to rotate at high speed, and the rotation direction of the workpiece 13 and the grinding wheel 62 are opposite, and efficient grinding can be performed when the two are in contact.

[0057] After a single grinding cycle reaches a preset time, the electric push rod 32 pushes the lifting sleeve 31 upward via the inner support arm 33, driving the upper grinding member away from the workpiece 13 and the lower grinding member against the bottom surface of the workpiece 13. As the upper and lower grinding members ascend, the central column 43 of the upper grinding member protrudes to spray coolant, while the central column 43 of the lower grinding member retracts into the grinding wheel 62. Under the push and pull action of the electric push rod 32, the upper and lower grinding members alternately grind the upper and lower surfaces of the workpiece 13, completing the grinding process.

[0058] When grinding the same workpiece 13, as the number of grinding times and time increase, the grinding wheel 62 is worn and its thickness gradually becomes thinner, while the electric push rod 32, which has a preset moving distance, moves the same distance each time. This causes the pressure of the grinding wheel 62 against the surface of the workpiece 13 to gradually weaken, and the grinding efficiency will gradually decrease.

[0059] In order to avoid the above situation, a plurality of elastically rotatable lifting plates 56 are provided on the inner surface of the support plate 51, and the lifting plates 56 cooperate with the lifting teeth 66 on the bottom surface of the mounting plate 61 and the pads 67 on the cylindrical surface of the chassis 63. In the early stage of grinding, when the grinding wheel 62 is not worn much, the pressure of the grinding wheel 62 against the workpiece 13 is greater than the lifting force of the lifting plates 56, and there is not enough space for the mounting plate 61 and the grinding wheel 62 to slide along the axis of the support plate 51. After the grinding wheel 62 is obviously worn, whenever the grinding wheel 62 and the workpiece 13 rotate relative to each other, the friction between the two will cause the grinding wheel 62 to rotate, and the grinding wheel 62 drives the mounting plate 61 to rotate (due to the limitations of the inner convex strip 53 and the missing groove 64, the mounting plate 61 can only rotate to a certain angle), and the mounting plate 61 drives the chassis 63 to rotate, and at the same time, the mounting plate 61 drives the lifting teeth 66 on its bottom surface to rotate synchronously, as shown in the attached manual. Figure 7 As shown, the contact surfaces of the lifting plate 56 and the lifting teeth 66 are both inclined surfaces. When the lifting teeth 66 rotate along with the mounting plate 61 (see the appendix of the manual), Figure 7 (rotates leftward in the center of the workpiece 13). The lifting teeth 66 cause the front end of the lifting plate 56 to rise, and the rear end rotates within the base 54, accumulating force in the torsion spring 55. Because the pressure between the workpiece 13 and the grinding wheel 62 decreases, the mounting plate 61 has room to rise. Therefore, when the lifting plate 56 is raised, it pushes the mounting plate 61 toward the workpiece 13. The mounting plate 61 compresses the second spring 65, which in turn drives the grinding wheel 62 upward, further contacting the surface of the workpiece 13. This increases pressure and improves grinding efficiency.

[0060] During the lifting stage of the mounting plate 61, the chassis 63 does not rise, and the chassis 63 is slidingly connected to the mounting plate 61. However, when the mounting plate 61 rotates, it will drive the chassis 63 to rotate, thereby driving the pad 67 close to the bottom of the lifting plate 56, further lifting the lifting plate 56, and the pad 67 is placed under the lifting plate 56 to prevent the lifting plate 56 from resetting when the pressure is too high, thereby preventing the lifting plate 56 from failing in the pressurization.

[0061] Example 2: This example is an explanation based on Example 1. For details, please refer to Figures 1-13 A cylinder seat 41 is fixedly connected to one side of each end plate 26 close to the corresponding mounting plate 34, and a first spring 42 is installed inside the cylinder seat 41. A central axis column 43 is provided through the mounting plate 34 and the support plate 51. One end of the central axis column 43 is slidably connected to the corresponding cylinder seat 41. A plurality of protruding columns 44 are fixedly connected to the middle part of the central axis column 43 in a circular array. A plurality of high-pressure nozzles 45 are fixedly connected to the cylindrical surface of the other end of the central axis column 43 in a circular array. A pressure plate 46 is fixed to the other end of the central axis column 43.

[0062] The interior of the mounting plate 61, the grinding wheel 62 and the chassis 63 are all slidably connected with a number of long rods 71 ​​in a circular array. A third spring 72 is installed inside the chassis 63. The long rod 71 is elastically connected to the interior of the mounting plate 61, the grinding wheel 62 and the chassis 63 through the third spring 72. The other end of the long rod 71 is fixedly connected to the outer shell 73. A lifting head 74 and a fourth spring 75 are installed inside the outer shell 73. The lifting head 74 is elastically connected to the interior of the outer shell 73 through the fourth spring 75. A fifth spring 76 and a closing head 77 are installed inside the lifting head 74. The closing head 77 is elastically connected to the interior of the lifting head 74 through the fifth spring 76, and the closing head 77 passes through the side of the outer shell 73.

[0063] In the first embodiment, it is described that when one side of the grinding piece is not grinding, the central axis column 43 in the grinding piece will protrude from the grinding wheel 62 and spray coolant on the surface of the grinding wheel 62. When the grinding piece on one side is grinding, the central axis column 43 will be retracted into the grinding wheel 62. After the central axis column 43 is retracted, the pressure plate 46 at its end will squeeze the lifting head 74 into the interior of the shell 73. The lifting head 74 compresses the fourth spring 75 and drives the closing head 77 to align with the notch on the side of the shell 73. When the two are aligned, the fifth spring 76 inside the lifting head 74 will push the closing head 77 out of the notch and insert it into the corresponding high-pressure nozzle 45, thereby sealing the high-pressure nozzle 45, effectively preventing impurities such as metal debris from entering the high-pressure nozzle 45 during the grinding process, and avoiding the high-pressure nozzle 45 from being blocked.

[0064] Although the center column 43 can be accommodated in the grinding wheel 62, the grinding wheel 62 is in a state of continuous wear and thinning during the grinding process. Once the thickness of the grinding wheel 62 is reduced to a certain extent, the center column 43 may be exposed, causing the center column 43 to directly contact the surface of the workpiece 13. In severe cases, not only the center column 43 is damaged, but also the workpiece 13.

[0065] Therefore, the friction force when the workpiece 13 collides with the grinding wheel 62 causes the grinding wheel 62 to drive the mounting plate 61 to rotate, and the mounting plate 61 drives the chassis 63 to rotate. The chassis 63 squeezes the protrusion 44 on the surface of the central axis column 43 during rotation through the inclined block 68 on its inner wall, pushing the central axis column 43 deeper into the grinding wheel 62, so that the central axis column 43 is connected to the cylinder seat 41 through the first spring 42, and the first spring 42 is compressed when the central axis column 43 slides. The central axis column 43 sinks further and is less likely to be exposed. Moreover, when the grinding is switched to non-grinding, the pressure on the grinding wheel 62 disappears, and the mounting plate 61 will reverse, thereby driving the chassis 63 to reverse. The inclined block 68 inside the chassis 63 no longer squeezes the boss 44 and no longer blocks the boss 44. Under the elastic force of the first spring 42 and the descent (or rise) of the support plate 51, the mounting plate 61, and the grinding wheel 62, the central axis column 43 can still slide out from the surface of the grinding wheel 62 and continue to spray water for cooling.

[0066] The central axis column 43 sinks as the grinding wheel 62 wears, and the convex column 44 is used to push the long rod 71 to slide. The long rod 71 compresses the third spring 72 while driving the outer shell 73 to descend synchronously, thereby ensuring that the ejection outlet of the closing head 77 on the side of the outer shell 73 is always aligned with the high-pressure nozzle 45, thereby ensuring that the closing head 77 can be accurately inserted into the corresponding high-pressure nozzle 45.

[0067] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A vehicle brake disc brake surface grinding device, comprising a support shaft (12), characterized in that: The top of the support shaft (12) is snap-connected with a processing piece (13), one side of the support shaft (12) is slidably connected with a slider (24), the top of the slider (24) is fixedly connected with a support column (25), and both ends of the support column (25) are symmetrically fixedly connected with two end plates (26); The support column (25) is sleeved with a lifting sleeve (31) on the outside, and two ends of the lifting sleeve (31) are symmetrically fixedly connected to two mounting plates (34); One side of each mounting plate (34) is rotatably connected to a support plate (51), the two support plates (51) are arranged facing each other, the inner surface of the support plate (51) is fixedly connected to a plurality of pairs of bases (54) in a circular array, and a lifting plate (56) is rotatably connected between each pair of bases (54); A mounting plate (61) is placed inside the support plate (51), a grinding wheel (62) is fixedly connected to one side of the mounting plate (61), and a plurality of lifting teeth (66) are fixedly connected to the other side of the mounting plate (61) in a circumferential array, each lifting tooth (66) abuts against the corresponding lifting plate (56); A cylinder seat (41) is fixedly connected to one side of each end plate (26) close to the corresponding mounting plate (34), a first spring (42) is installed inside the cylinder seat (41), a central axis column (43) is provided through the mounting plate (34) and the support plate (51), one end of the central axis column (43) is slidably connected to the corresponding cylinder seat (41), a plurality of convex columns (44) are fixedly connected to the middle of the central axis column (43) in a circumferential array, a plurality of high-pressure nozzles (45) are fixedly connected to the cylindrical surface of the other end of the central axis column (43) in a circumferential array, and a pressure plate (46) is fixed to the other end of the central axis column (43); A cylindrical gear (52) is provided through each of the mounting plates (34), the cylindrical gear (52) is fixedly connected to the surface of the support plate (51), a plurality of inner convex strips (53) are fixedly connected in a circular array on the inner side wall of the support plate (51), a torsion spring (55) is installed inside the base (54), and the lifting plate (56) is elastically connected to the base (54) through the torsion spring (55); The other side of the mounting plate (61) is also slidably connected to a chassis (63), and the chassis (63) is rotatably connected to the inner surface of the support plate (51). The central axis column (43) passes through the mounting plate (61), the grinding wheel (62) and the chassis (63). The outer edge of the mounting plate (61) is provided with a plurality of slots (64) in a circumferential array, and the slots (64) are engaged with the corresponding inner convex strips (53). A plurality of second springs (65) are installed in a circumferential array inside the support plate (51). The mounting plate (61) is elastically connected to the inside of the support plate (51) through the second springs (65). The outer surface of the chassis (63) is fixedly connected to a plurality of pads (67) in a circumferential array, and each pad (67) abuts against the corresponding lifting plate (56). The inner side of the chassis (63) is fixedly connected to a plurality of inclined blocks (68) in a circumferential array.

2. The automobile brake disc brake surface grinding device according to claim 1, characterized in that: The bottom of the support shaft (12) is fixed on the base (11).

3. The automobile brake disc brake surface grinding device according to claim 2, characterized in that: A propulsion frame (21) is fixed on the top surface of the base (11) on one side of the support shaft (12), and a No. 1 motor (22) is fixedly installed on the top surface of the base (11) at one end of the propulsion frame (21). The output end of the No. 1 motor (22) is fixedly connected to a screw rod (23), and the screw rod (23) is rotatably connected to the inside of the propulsion frame (21). The screw rod (23) is threadedly connected to the slider (24), and a lifting groove (27) is provided inside the support column (25).

4. The automobile brake disc brake surface grinding device according to claim 3, characterized in that: An electric push rod (32) is fixedly installed inside the support column (25), and two inner support arms (33) are symmetrically fixed to the inner wall of the lifting sleeve (31). The inner support arms (33) are fixed to the output end of the electric push rod (32), and the inner support arms (33) are slidably connected to the lifting slot (27). A second motor (35) is fixedly installed on one side of each mounting plate (34) away from the support plate (51), and the output end of the second motor (35) is fixedly connected to an output gear (36).

5. The automobile brake disc brake surface grinding device according to claim 1, characterized in that: The cylindrical gear (52) is sleeved on the surface of the central axis column (43), and the cylindrical gear (52) and the central axis column (43) are rotationally connected.

6. The automobile brake disc brake surface grinding device according to claim 1, characterized in that: The cylindrical gear (52) is meshedly connected with the corresponding output gear (36).

7. The automobile brake disc brake surface grinding device according to claim 1, characterized in that: The interiors of the mounting plate (61), the grinding wheel (62) and the chassis (63) are all slidably connected with a plurality of long rods (71) in a circular array. A third spring (72) is installed inside the chassis (63). The long rod (71) is elastically connected to the interiors of the mounting plate (61), the grinding wheel (62) and the chassis (63) through the third spring (72). The other end of the long rod (71) is fixedly connected to the housing (73). A lifting head (74) and a fourth spring (75) are installed inside the housing (73). The lifting head (74) is elastically connected to the interior of the housing (73) through the fourth spring (75). A fifth spring (76) and a closing head (77) are installed inside the lifting head (74). The closing head (77) is elastically connected to the interior of the lifting head (74) through the fifth spring (76), and the closing head (77) passes through the side of the housing (73).

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